There are IP based shows in the works. Obviously the Snyder Cut is coming this year, continuations like Doom Patrol and Harley Quinn are on the service, but there are other, bigger deal things in the works (or planned).
Shows like Peacemaker (Suicide Squad spinoff, written by James Gunn), Gotham PD, Dune: The Sisterhood, a Green Lantern show, and the rumored Potter show are all in the works. It should be noted that legally, Warner cannot start work or announce a Potter show until 2022 when Universal's streaming rights expire for the franchise.